20978272263006 has 16 divisors (see below), whose sum is σ = 46618382806800. Its totient is φ = 6992757420984.

The previous prime is 20978272262921. The next prime is 20978272263023. The reversal of 20978272263006 is 60036227287902.

20978272263006 is a `hidden beast` number, since 2 + 0 + 97 + 8 + 27 + 226 + 300 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 388486523389 = 20978272263006 / (2 + 0 + 9 + 7 + 8 + 2 + 7 + 2 + 2 + 6 + 3 + 0 + 0 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194243261641 + ... + 194243261748.

It is an arithmetic number, because the mean of its divisors is an integer number (2913648925425).

Almost surely, 2^{20978272263006} is an apocalyptic number.

20978272263006 is an abundant number, since it is smaller than the sum of its proper divisors (25640110543794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20978272263006 is a wasteful number, since it uses less digits than its factorization.

20978272263006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388486523400 (or 388486523394 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 20978272263006 in words is "twenty trillion, nine hundred seventy-eight billion, two hundred seventy-two million, two hundred sixty-three thousand, six".